Post extubation strider in neonate
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neonatal extubation AND stridor
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neonatal post extubation stridor management guideline
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https://www.rch.org.au/rchcpg/hospital_clinical_guideline_in…
Post-extubation stridor in a neonate is an upper-airway emergency until proven otherwise. It is most often caused by laryngeal or subglottic edema from endotracheal-tube trauma.
Immediate approach
- Call neonatal/airway senior help and prepare for reintubation.
- Provide continuous cardiorespiratory monitoring, assess work of breathing, oxygen requirement, air entry, blood gas if deteriorating.
- Keep the infant calm and position with airway support. Give humidified oxygen.
- Nebulised adrenaline (epinephrine) is commonly first-line for clinically significant stridor due to suspected edema. Observe closely for recurrence after its temporary effect wears off.
- Consider systemic dexamethasone for suspected airway edema, particularly after prolonged, difficult, traumatic, or repeated intubations. Use the local neonatal dose/protocol.
- Reintubate early if there is worsening distress, recurrent apnoea, hypoxaemia, hypercapnia/acidosis, exhaustion, poor air entry, or inadequate response to temporising therapy. Use an appropriately smaller ETT if edema is likely.
Important differential diagnosis if persistent or atypical
- Subglottic edema or stenosis
- Vocal-cord paresis/paralysis
- Laryngeal granuloma
- Laryngospasm
- Secretions, blood clot, or mucus obstruction
- Congenital airway lesion, such as laryngomalacia or vocal-cord anomaly
- Central/brainstem dysfunction
Persistent stridor despite repeated nebulised adrenaline, or recurrent extubation failure, warrants ENT assessment and airway endoscopy when clinically stable.
Risk factors
- Oversized ETT
- Prolonged intubation
- Multiple or traumatic intubation attempts
- Absent/minimal air leak before extubation
For a high-risk neonate before elective extubation, humidified oxygen is advised and a short pre-extubation dexamethasone course may be considered according to unit protocol. Evidence in neonates does not support routine steroids for every baby, but potential benefit appears greater in those at high risk of airway trauma/edema.
Post-extubation stridor usually occurs quickly, often within 30 minutes. Sources: Barash, Cullen, and Stoelting’s Clinical Anesthesia, p. 3777; The Harriet Lane Handbook, p. 33. The RCH neonatal extubation guideline similarly identifies nebulised adrenaline as first-line treatment and recommends investigating alternative causes if it persists.
What neonatal doses are used for nebulised adrenaline and dexamethasone?
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neonate AND postextubation stridor AND dexamethasone
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neonatal post extubation stridor nebulised adrenaline dose dexamethasone dose guideline
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https://www.kemh.health.wa.gov.au/~/media/HSPs/NMHS/Hospital…
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For a neonate with suspected post-extubation laryngeal/subglottic edema, commonly used regimens are:
| Medication | Common dose | Practical notes |
|---|---|---|
| Nebulised adrenaline (epinephrine), 1 mg/mL (1:1,000) | 0.5 mL/kg per nebulised dose, maximum 5 mL | Usually given undiluted or made up to a nebuliser volume per local protocol. It may be repeated after about 15-20 minutes if needed while preparing for definitive airway management. Monitor HR, BP, oxygenation, and for rebound stridor. |
| Dexamethasone IV | 250 micrograms/kg/dose (0.25 mg/kg) every 8 hours for 3 doses | Best evidence and usual neonatal use are as prophylaxis in high-risk extubation, starting 4-12 hours before extubation. This regimen is also used in some neonatal protocols for acute non-infectious laryngeal edema/laryngospasm. |
The WA neonatal dexamethasone monograph specifies dexamethasone 0.25 mg/kg every 8 hours for three doses, commencing 4-12 hours before extubation for repeated, traumatic, or prolonged intubation. Historical neonatal trials also used 0.25 mg/kg IV either as a single pre-extubation dose or every 8 hours for three doses.
Safety point: nebulised adrenaline is a temporary measure. Escalating distress, cyanosis, apnoea, bradycardia, rising CO₂, exhaustion, or poor air entry requires immediate senior neonatal/airway support and preparation for early reintubation, usually with a smaller ETT. Use the local NICU formulary for the exact nebuliser dilution, delivery system, and repeat-dose limit.
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